Method CodePointAt

CodePointAt(String, Int32)

Returns the code point at the given index of the ICharSequence. Depending on the LuceneVersion passed to GetInstance(LuceneVersion) this method mimics the behavior of Character.CodePointAt(char[], int) as it would have been available on a Java 1.4 JVM or on a later virtual machine version.

Declaration
public abstract int CodePointAt(string seq, int offset)
Parameters
Type Name Description
System.String seq

a character sequence

System.Int32 offset

the offset to the char values in the chars array to be converted
Returns
Type Description
System.Int32

the Unicode code point at the given index

Exceptions
Type Condition
System.NullReferenceException
  • if the sequence is null.
System.IndexOutOfRangeException
  • if the value offset is negative or not less than the length of the character sequence.

CodePointAt(ICharSequence, Int32)

Declaration
public abstract int CodePointAt(ICharSequence seq, int offset)
Parameters
Type Name Description
ICharSequence seq
System.Int32 offset
Returns
Type Description
System.Int32

CodePointAt(Char[], Int32, Int32)

Returns the code point at the given index of the char array where only elements with index less than the limit are used. Depending on the LuceneVersion passed to GetInstance(LuceneVersion) this method mimics the behavior of Character.CodePointAt(char[], int) as it would have been available on a Java 1.4 JVM or on a later virtual machine version.

Declaration
public abstract int CodePointAt(char[] chars, int offset, int limit)
Parameters
Type Name Description
System.Char[] chars

a character array

System.Int32 offset

the offset to the char values in the chars array to be converted

System.Int32 limit

the index afer the last element that should be used to calculate codepoint.

Returns
Type Description
System.Int32

the Unicode code point at the given index

Exceptions
Type Condition
System.NullReferenceException
  • if the array is null.
System.IndexOutOfRangeException
  • if the value offset is negative or not less than the length of the char array.